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~~The GTX 670 Overclocking Master-Guide~~ - Page 57

post #561 of 3357
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Quote:
Originally Posted by twitchyzero View Post


When I changed PTarget to 120% and ran 1866 mem it was stable
Tried doing that with 1900 mem and still powered throttled...same thing when I pull PTarget down to 112% (I didn't want to get with 5% of the max 107% TDP). This image is of me running 1250c/1900m/112% PTarget/1.175V
Usually power throttle kicks in 10-15 min of heaven looping
Also another question, my CPU/RAM are running default values. Will I see any graphics gains by overclocking them so my system can squeeze out more performance/fps with my 670 SLI? Or is it not going to affect anything because they are of I assume no bottleneck?

I don't see any throttling in that screenshot. Your second GPU's core clock is being reduced only because it's usage is also reduced (so because the usage is so low, there's no reason to have the core running at full speed). The reason this happens is to save power during less-demanding sections of a game. If that's all you're seeing, than i would say not to worry about it.

Of course you'll see performance gains from overclocking your CPU and ram, especially with a 670 SLI setup which will be bottlenecked by a weaker CPU. Just a heads-up though, you will most likely not see a performance increase in Heaven by overclocking your CPU, this is normal. However, you will see substantial gains in real games.
Edited by SeanPoe - 7/27/12 at 3:48pm
post #562 of 3357
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Quote:
Originally Posted by qazserNOS View Post

Great guide, at least for achieving maximum performance in Heaven. Sadly though, getting my watercooled EVGA GTX 670 stable in Battlefield 3 multiplayer is proving to be very difficult. frown.gif
I could run Heaven at +169 / +475 for at least two consecutive runs. Battlefield, however, would crash within a few minutes. I lowered the clocks gradually until I hit +135 / +0 (better get the core clock stable first). The card still crashed after about 30 minutes. I then tried +120 / +0, which seemed to be stable. I have to test some more to make sure it's stable and then try boosting the clock a bit higher.
The card may have crashed in Heaven if I ran it longer, but the stability difference compared to Battlefield is surprisingly large. In the time frame it would take to run two flawless Heaven runs, Battlefield would crash even at around +145 / +0.
I must say I'm a bit disappointed. The card may have below average overclockability, which in itself is not nice, but what makes the situation worse is the extremely slow method of stability testing by playing an hour or so after each clock increase. But I guess I'll get there eventually. Then I can try my luck with memory overclocking, which will hopefully be more straightforward.
Is anyone else experiencing this phenomenon with some game?
I'm thinking Battlefield 3 multiplayer is the definitive stability test. Man, that game likes to crash! It may crash even though your CPU overclock is rock solid in every other application. It crashes even with some stock GPUs (friend's GTX 570 needed more voltage).

I wouldn't say Battlefield three is the ultimate stability test. Battlefield 3 is the only game that I've seen that does this so i think you would be hurting your performance in 99.9% of other games if you try to balance your GPU speeds around BF3 stability. What i'd recommend is maybe setting up a secondary OC profile for BF3 and then having your primary profile (with your Heaven-stable/other-game-stable overclock) for other games.
post #563 of 3357
Quote:
Originally Posted by SeanPoe View Post

I wouldn't say Battlefield three is the ultimate stability test. Battlefield 3 is the only game that I've seen that does this so i think you would be hurting your performance in 99.9% of other games if you try to balance your GPU speeds around BF3 stability. What i'd recommend is maybe setting up a secondary OC profile for BF3 and then having your primary profile (with your Heaven-stable/other-game-stable overclock) for other games.

Well thank God. I was getting pissed off about this issue too.
post #564 of 3357
Well, definitively going and having the card replaced.

It crashed in Heaven stock.
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post #565 of 3357
Quote:
Originally Posted by SeanPoe View Post

I don't see any throttling in that screenshot. Your second GPU's core clock is being reduced only because it's usage is also reduced (so because the usage is so low, there's no reason to have the core running at full speed). The reason this happens is to save power during less-demanding sections of a game. If that's all you're seeing, than i would say not to worry about it.
Of course you'll see performance gains from overclocking your CPU and ram, especially with a 670 SLI setup which will be bottlenecked by a weaker CPU.

Are you sure that's power saving? If so, is there a way to turn it off? What would power throttle on a chart look like if it's not that? This never happens unless I crank up my OC too high or if I've been running heaven tests for an extended (let's say 5hr+) time. It requires a reboot to 'reset' it.

I just don't understand why power + GPU usage will just tank like that..taking a huge performance hit on the fps. Has this been happening to most people's Kepler cards?

I'll eventually get to overclocking my cpu/ram...but you think my setup at default values is a bottleneck to OC'd 670 SLI? I've 3570K & 16GB DDR3-1600

BTW, I only seem to be able to take a see precision X graph of data from the last 5-8 min or so..I can't figure out how to scroll to the data outside of this range...
Edited by twitchyzero - 7/27/12 at 9:14pm
     
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post #566 of 3357
Here's my Top: thumb.gif

heaven30asusgtx670dcii1.jpg

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post #567 of 3357
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Quote:
Originally Posted by twitchyzero View Post

Are you sure that's power saving? If so, is there a way to turn it off? What would power throttle on a chart look like if it's not that? This never happens unless I crank up my OC too high or if I've been running heaven tests for an extended (let's say 5hr+) time. It requires a reboot to 'reset' it.
I just don't understand why power + GPU usage will just tank like that..taking a huge performance hit on the fps. Has this been happening to most people's Kepler cards?
I'll eventually get to overclocking my cpu/ram...but you think my setup at default values is a bottleneck to OC'd 670 SLI? I've 3570K & 16GB DDR3-1600

There's a pretty severe bug with Heaven where it suddenly gets stuck in 2d-mode and/or doesn't run as well as it should. It seems to happen more often with unstable overclocks but I've also seen it happen even at stock. What's happening to you is different than what i was talking about in my previous post (about gpu usage throttle) before i had all the information. I'd say just restart your computer whenever it happens and then continue testing with your previous settings. If you see that same thing happening in any real games, then it's cause for concern and you might need to look into it more.
post #568 of 3357
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Quote:
Originally Posted by twitchyzero View Post

I just don't understand why power + GPU usage will just tank like that..taking a huge performance hit on the fps. Has this been happening to most people's Kepler cards?
I've only seen people mention it during Heaven, never in any real games. I don't know if it's a bug with Heaven or with the combination of Heaven and the 670. I'd recommend displaying the OSD for GPU-usage and GPU-core-clock so you can monitor performance during some real games as you play them. If you ever suddenly see GPU-usage drop off (and stay reduced) or see core-clock drop off without a corresponding gpu-usage drop, then you might have an unstable overclock or some other issue going on. My guess is you have nothing to worry about. I had similar issues as you're describing with Heaven and have never seen it happen in another game or benchmark.
Quote:
I'll eventually get to overclocking my cpu/ram...but you think my setup at default values is a bottleneck to OC'd 670 SLI? I've 3570K & 16GB DDR3-1600
BTW, I only seem to be able to take a see precision X graph of data from the last 5-8 min or so..I can't figure out how to scroll to the data outside of this range..

It's not going to be an absolutely massive bottleneck, but yes, i think your stock 3570K will act as a bottleneck for two overclocked 670's. A stock 3570K might even be a bottleneck for a single 670 in some CPU-intensive games (like, for example, Guild Wars 2). There's no rush to overclock your 3570K, i was just pointing out that you won't be seeing the truest potential of your 670's until you do overclock you CPU too.
post #569 of 3357

I can't seem to get any higher, I also get about 9700 in 3dmark11 and I wish I could break 10k
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post #570 of 3357
Quote:
Originally Posted by ShotgunBFFL View Post


I can't seem to get any higher, I also get about 9700 in 3dmark11 and I wish I could break 10k
Really? Is that your graphics? Can you post a link?
EDIT: Never mind I found the link in the 3dmark 11 post, that does seem odd that I am beating you by 900points(Graphics) yet you are beating me in Heaven..
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